li INTRODUCTION. 



nured, and laboriously worked. Still, in addition to 

 being a practical man, in order to be a successful farmer 

 he must understand in a measure the nature of the crops 

 he raises, the character and constituents of the soil on 

 which they are grown, and the different kinds of ma- 

 nures and compost most suitable to prevent exhaustion 

 of different kinds of land ; thereby, with the aid of ag- 

 ricultural chemistry, the wealth of the United States 

 could be doubled in one year, were all that saved which 

 is now lost by bad management. In short, the wealth 

 of all nations depends upon the rising generation of prac- 

 tical, chemical farmers, who will till the soil as much by 

 the laws of chemistry as by the sweat of the brow ; and 

 the simple facts and information contained in this little 

 volume, (for only thirty- three cents,) cannot be estimated 

 in dollars and cents, and should be in the hands of every 

 man in this country as a book of reference, even if he 

 improves nothing more than a garden spot of twenty- 

 five feet square. 



H.&B. 



